Vacuum jug



FIG. 1 is a top, front, and left side perspective view of a vacuum jug showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof; a view from the opposite left side is a mirror image thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a vacuum jug, as shown and described. 